Abstract

Measurements of the sharp reflection peaks of two iridescent potassium chlorate crystals are presented, together with theoretical calculations based on Lord Rayleigh’s model that the reflection is due to a stratified “grating-in-depth,” formed by evenly spaced layers of low reflectance. The possibility of such structures for filters useful in the far infrared is pointed out.

© 1961 Optical Society of America

Infrared Polarizers of the Reflection Type

Shin-ichi Takahashi
J. Opt. Soc. Am. 51(4) 441-444 (1961)

Infrared Filters of Antireflected Si, Ge, InAs, and InSb*

J. T. Cox, G. Hass, and G. F. Jacobus
J. Opt. Soc. Am. 51(7) 714-718 (1961)

Optical Constants and Reflectance and Transmittance of Evaporated Aluminum in the Visible and Ultraviolet*

G. Hass and J. E. Waylonis
J. Opt. Soc. Am. 51(7) 719-722 (1961)

Reflectivity of Silver Chloride in the Ultraviolet*

Paul L. Hartman and Richard C. Merrill
J. Opt. Soc. Am. 51(2) 168-170 (1961)

Measurements of Infrared Spectral Emissivities of Hot Carbon Dioxide in the 4.3-μ Region*

Richard H. Tourin
J. Opt. Soc. Am. 51(2) 175-183 (1961)